June 16, 2004 - San Jose, California – Portola Packaging, Inc. will report its results for the third quarter ended May 31, 2004 in a press release to be issued on June 21, 2004.

In addition, Executive Management will hold a conference call to discuss third quarter results. Details of the call are as follows:

Date of the call: June 22, 2004
Time of the call: 10:00 AM PDT
U.S. Dial In Number: 888-428-4471
International Dial In Number: 651-291-0344

A replay of the call will be available beginning on June 22nd, 2004 at 3:15 PM PDT and ending on July 22nd, 2004 at 11:59 P.M. PDT. Dial in numbers for the replay are:

U.S.: 800-475-6701
International: 320-365-3844
Access Code: 735569